A case with leiomyoma of iris extirpated with cryosurgery and its pathological findings

Epstein-Barr virus-associated iris smooth muscle tumor with epithelioid morphology in AIDS patients: a case report

Importance

Report of an acquired immunodeficiency syndrome (AIDS) patient with Epstein–Barr virus (EBV)-associated iris smooth muscle tumor.

Observations

A 14-year-old African American female diagnosed with AIDS developed a painless iris mass in the right eye for 10 months. Iridocyclectomy was performed, and the pathology indicated EBV-associated iris smooth muscle tumor with epithelioid morphology. Immunohistochemical stains and in situ hybridization for EBV-encoded ribonucleic acid are very useful diagnostic tools for definite diagnosis. At 14-month follow-up, the patient did not have any tumor recurrence.

Conclusion

This is the case report of EBV-associated iris smooth muscle tumor in a person diagnosed with AIDS with a unique epithelioid morphologic feature.

Epstein-Barr virus-associated smooth muscle tumor of the iris in a patient with transplant: a case report and review of the literature

Epstein-Barr virus infection has been linked to the development of smooth muscle tumors in immunocompromised patients with organ transplants and acquired immunodeficiency syndrome. A 52-year-old female recipient of a renal transplant presented with enlarging masses of the left iris. Incisional biopsy of the mass revealed a smooth muscle tumor of the iris. Epstein-Barr virus infection was confirmed by in situ hybridization for Epstein-Barr virus-encoded, small RNA in tumor cells. Eight months after total iridectomy the patient was free of disease. Although the prognosis and classification of Epstein-Barr virus-associated smooth muscle tumors are controversial, mortalities caused by these tumors are rare.

A leiomyoma of the iris documented by immunohistochemistry and electron microscopy

PURPOSE

To report an iris leiomyoma documented in accordance with today's stricter diagnostic criteria.

METHODS

Light microscopy, immunohistochemistry and electron microscopy were performed on the 3 mm ball-like, greyish-white vascularized tumour of the iris, close to the sphincter pupillae.

RESULTS

Light microscopy of the extirpated neoplasm showed the characteristic appearance of a leiomyoma with densely packed spindle-shaped cells, with oval nuclei and granular cytoplasm. On electron microscopic examination the tumour exhibited the characteristic features of a smooth muscle neoplasm. The immunohistochemistry was consistent with a myogenic tumour because the tumour cells were positive for smooth muscle actin and desmin, but negative for S-100 and melanin.

CONCLUSION

The case illustrated the necessity of performing ancillary procedures such as electron microscopy and immunohistochemistry to substantiate a correct, although rare diagnosis.